CN105514624B - A kind of mobile terminal antenna system and mobile terminal - Google Patents

A kind of mobile terminal antenna system and mobile terminal Download PDF

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Publication number
CN105514624B
CN105514624B CN201510991162.0A CN201510991162A CN105514624B CN 105514624 B CN105514624 B CN 105514624B CN 201510991162 A CN201510991162 A CN 201510991162A CN 105514624 B CN105514624 B CN 105514624B
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CN
China
Prior art keywords
metal edge
edge frame
match circuit
antenna
mobile terminal
Prior art date
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CN201510991162.0A
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Chinese (zh)
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CN105514624A (en
Inventor
赵宁
向胜昭
李彦涛
胡莎莎
Original Assignee
广东欧珀移动通信有限公司
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Priority to CN201510991162.0A priority Critical patent/CN105514624B/en
Publication of CN105514624A publication Critical patent/CN105514624A/en
Application granted granted Critical
Publication of CN105514624B publication Critical patent/CN105514624B/en

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00Antennas with active circuits or circuit elements integrated within them or attached to them
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/44Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/30Combinations of separate antenna units operating in different wavebands and connected to a common feeder system

Abstract

The invention discloses a kind of mobile terminal antenna system and mobile terminal, wherein antenna system includes metal edge frame, NFC feeds, the first match circuit, diversity antenna feed, the second match circuit, zero inductance and the reference ground of mobile terminal;It is provided at least two gaps on metal edge frame, the metal edge frame between any adjacent slits is the first metal edge frame;NFC feeds are connect by the first match circuit with the first metal edge frame;Diversity antenna feed is connect by the second match circuit with the first metal edge frame;Zero inductance one end is connect with the first metal edge frame, another termination reference ground;NFC feeds, the first match circuit, the first metal edge frame, zero inductance and reference ground form NFC antenna system;Diversity antenna feed, the second match circuit and the first metal edge frame form diversity aerial system;NFC antenna system and diversity aerial system share the first metal edge frame as antenna radiator;The present invention solves the problems, such as that embedded antenna for mobile terminal occupies more space and antenna is of high cost.

Description

A kind of mobile terminal antenna system and mobile terminal

Technical field

The present invention relates to technical field of mobile terminals more particularly to a kind of mobile terminal antenna system and mobile terminals.

Background technology

At present, intelligent mobile terminal has been generally designed near-field communication (Near Field Communication, NFC) work( Can, accordingly, it is desirable to which NFC antenna realizes NFC function.NFC is a kind of radio frequency identification communications protocol skill of minimum distance Art standard, NFC technique are based primarily upon the radio-frequency technique of 13.56MHz frequencies operation, and transmission range is small, but transmit fast, energy consumption It is low.

In intelligent mobile terminal, be often additionally provided with global positioning system (Global Positioning System, GPS) the mutiple antennas such as antenna, Wireless Fidelity (Wireless Fidelity, WiFi) antenna, diversity antenna and primary antenna, each work( The antenna of energy is generally built in a manner of patch on the mainboard of mobile terminal, and NFC antenna and other antennas are all separately to set Meter, more space is occupied, the design for the terminal for not only making volume requirement less and less is increasingly difficult to, and also adds antenna Cost.

Invention content

In view of this, the purpose of the present invention is to propose to a kind of mobile terminal antenna system and mobile terminal, to solve to move Terminal built-in antenna occupies the problem of more space and antenna of high cost, the space of mobile terminal is saved, conducive to mobile terminal body Product miniaturized design.

To achieve the above object, the present invention adopts the following technical scheme that:

On the one hand, an embodiment of the present invention provides a kind of mobile terminal antenna system, the metal edge frame including mobile terminal, Near-field communication NFC feeds, the first match circuit, diversity antenna feed, the second match circuit, zero inductance and reference ground;It is described It is provided at least two gaps on metal edge frame, the metal edge frame between any of which adjacent slits is as the first metal edge frame;

The NFC feeds are connect by first match circuit with first metal edge frame;The diversity antenna feedback Source is connect by second match circuit with first metal edge frame;One end of the zero inductance and first metal Frame connects, another termination reference ground;The NFC feeds, the first match circuit, the first metal edge frame, zero inductance and reference Ground forms NFC antenna system;The diversity antenna feed, the second match circuit and the first metal edge frame form diversity antenna system System;The NFC antenna system and the diversity aerial system share first metal edge frame as antenna radiator;

First match circuit is used to match the resonant frequency of NFC antenna;Second match circuit divides for being widened Collect the bandwidth of antenna;The zero inductance is used to improve the radiant power of NFC antenna, filters out high-frequency signal.

On the other hand, an embodiment of the present invention provides a kind of mobile terminal, including the mobile terminal day in one side face Linear system is united.

The beneficial effects of the invention are as follows:A kind of mobile terminal antenna system provided by the invention and mobile terminal, in metal Gap is opened up on frame, metal edge frame is divided at least two sections, wherein one section of first metal edge frame of conduct is chosen, by NFC feeds Connect by the first match circuit with first metal edge frame, at the same by diversity antenna feed by the second match circuit and this One metal edge frame connects, and NFC antenna system and diversity aerial system is made to share first metal edge frame as antenna radiator, solution Antenna in the prior art of having determined is built in mobile terminal in a manner of patch the problem of causing to occupy more space, while NFC Antenna and diversity antenna share one section of metal edge frame, not only save the space of mobile terminal, miniature conducive to size of mobile terminals Change design, and reduce antenna cost.

Description of the drawings

Exemplary embodiments of the present invention will be described in detail referring to the drawings by general below, makes those of ordinary skill in the art The above-mentioned and other feature and advantage of the present invention are become apparent from, in attached drawing:

Fig. 1 is the structure diagram for the mobile terminal antenna system that the embodiment of the present invention one provides;

Fig. 2 is the stereogram for the mobile terminal metal edge frame that the embodiment of the present invention one provides;

Fig. 3 is the NFC antenna system equivalent structure schematic diagram that the embodiment of the present invention one provides;

Fig. 4 is the diversity aerial system equivalent structure schematic diagram that the embodiment of the present invention one provides;

Fig. 5 is the structure diagram for the first match circuit that the embodiment of the present invention one provides;

Fig. 6 is the structure diagram for the second match circuit that the embodiment of the present invention one provides;

Fig. 7 is the structure diagram of mobile terminal antenna system provided by Embodiment 2 of the present invention;

Fig. 8 is the plan view of mobile terminal metal edge frame provided by Embodiment 2 of the present invention.

Specific embodiment

Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.It is appreciated that It is that specific embodiment described herein is used only for explaining the present invention rather than limitation of the invention.It further needs exist for illustrating , part related to the present invention rather than entire infrastructure are illustrated only for ease of description, in attached drawing.

Embodiment one

Mobile terminal antenna system provided in this embodiment, can be used in various mobile terminals, for example, mobile whole End can be included through wireless access network RAN and the user equipment that communicates of one or more core nets, which can be with It is mobile phone (" honeycomb " phone), the computer with mobile terminal etc., for example, user equipment can also be portable, sleeve Precious formula, hand-held, built-in computer or vehicle-mounted mobile device, they exchange voice and/or data with wireless access network. In another example the mobile terminal can include mobile phone, tablet computer, personal digital assistant PDA, point-of-sale terminal POS or vehicle-mounted computer Deng.

Fig. 1 is the structure diagram for the mobile terminal antenna system that the embodiment of the present invention one provides;Fig. 2 is implementation of the present invention The stereogram for the mobile terminal metal edge frame that example one provides.As shown in Figure 1, the mobile terminal antenna system includes mobile terminal Metal edge frame 1, NFC feeds 2, the first match circuit 3, diversity antenna feed 4, the second match circuit 5, zero inductance 6 and reference Ground 7;It is provided at least two gaps 8 on above-mentioned metal edge frame 1, the metal edge frame between any of which adjacent slits 8 is as first Metal edge frame 9;Plastic cement can be filled in each gap 8, to connect each section of metal edge frame.

Wherein, NFC feeds 2 are connect by the first match circuit 3 with the first metal edge frame 9;Diversity antenna feed 4 passes through Two match circuits 5 are connect with the first metal edge frame 9;One end of zero inductance 6 is connect with the first metal edge frame 9, another termination ginseng Examine ground 7;NFC feeds 2, the first match circuit 3, the first metal edge frame 9, zero inductance 6 and reference ground 7 form NFC antenna system; Diversity antenna feed 4, the second match circuit 5 and the first metal edge frame 9 form diversity aerial system;NFC antenna system and diversity Antenna system shares the first metal edge frame 9 as antenna radiator.

In the present embodiment, the first match circuit 3 is used to match the resonant frequency of NFC antenna;Second match circuit 5 is used to open up The bandwidth of wide diversity antenna;Zero inductance 6 is used to improve the radiant power of NFC antenna, filters out high-frequency signal.

Specifically, when NFC antenna works, equivalent circuit is as shown in figure 3, dotted arrow represents equivalent current path, Fig. 1 In zero inductance 6 short-circuit condition, NFC feeds 2, the first match circuit 3, the first metal edge frame are equivalent to for NFC signals 9th, zero inductance 6 and reference ground 7 form cyclic annular Loop antennas;When diversity antenna works, equivalent circuit is as shown in figure 4, dotted line Arrow represents equivalent current path, and the zero inductance 6 in Fig. 1 is equivalent to open-circuit condition, diversity antenna feedback for diversity signal Source 4, the second match circuit 5 and the first metal edge frame 9 form unipole antenna.In addition, it is adapted, in diversity antenna transmitting-receiving effect not When good, can between 4 and second match circuit 5 of diversity antenna feed an in parallel ground connection inductance, to match diversity antenna Input impedance.

Illustratively, referring to Fig. 5, first match circuit 3 of the present embodiment can include the first capacitance C1 and the first inductance L1;Wherein, one end of the first capacitance C1 and one end of the first inductance L1 are connect after being connected with the first metal edge frame 9, the first capacitance The other end of C1 is connect with NFC feeds 2, another termination reference ground 7 of the first inductance L1.It is adapted, suitable C1 and L1 is set Value, the resonant frequency of NFC antenna can be made to meet the working frequency of NFC antenna in 13.56MHz.

Referring to Fig. 6, the second match circuit 5 can include the second capacitance C2 and the second inductance L2;Wherein, the second capacitance C2 One end and one end of the second inductance L2 are connect after being connected with the first metal edge frame 9, the other end and diversity antenna of the second inductance L2 Feed 4 connects, another termination reference ground 7 of the second capacitance C2.The value of suitable C2 and L2 are set, it can be with spreading diversity antenna Bandwidth adapts to the working band of diversity antenna.

The mobile terminal antenna system that the embodiment of the present invention one provides, opens up gap, by metal edge frame on metal edge frame It is divided at least two sections, chooses wherein one section of first metal edge frame of conduct, NFC feeds are passed through into the first match circuit and first gold medal Belong to frame connection, while diversity antenna feed is connect by the second match circuit with first metal edge frame, make NFC antenna system System and diversity aerial system share first metal edge frame as antenna radiator, solve in the prior art antenna with patch Mode is built in mobile terminal the problem of causing to occupy more space, while NFC antenna and diversity antenna share one section of metal Frame not only saves the space of mobile terminal, conducive to size of mobile terminals miniaturized design, and reduces antenna cost.

Embodiment two

Fig. 7 is the structure diagram of mobile terminal antenna system provided by Embodiment 2 of the present invention, different from embodiment one , drive there are four gap on the metal edge frame in the present embodiment, metal edge frame be divided into four sections, every section of metal edge frame and difference Anneta module composition different function antenna structure.As shown in fig. 7, the mobile terminal antenna system includes the gold of mobile terminal Belong to frame, NFC feeds 2, the first match circuit 3, diversity antenna feed 4, the second match circuit 5, zero inductance 6 and reference ground 7; It is driveed on above-mentioned metal edge frame there are four gap 8, metal edge frame sequence is divided into the first metal edge frame 9, the second metal edge frame 10, the Three metal edge frames 11 and the 4th metal edge frame 12;Plastic cement can be filled in each gap 8, to connect each section of metal edge frame.

Wherein, NFC feeds 2 are connect by the first match circuit 3 with the first metal edge frame 9;Diversity antenna feed 4 passes through Two match circuits 5 are connect with the first metal edge frame 9;One end of zero inductance 6 is connect with the first metal edge frame 9, another termination ginseng Examine ground 7;WiFi feeds 13 are connect by third match circuit 14 with one end of the second metal edge frame 10;GPS feeds 15 pass through Four match circuits 16 are connect with one end of the 4th metal edge frame 12;Primary antenna feed 17 passes through the 5th match circuit 18 and third gold Belong to frame 11 to connect;The predeterminated position of second metal edge frame 10 and the 4th metal edge frame 12 connects reference ground 7;Each match circuit with it is right The tie point of metal edge frame is answered to form distributing point;NFC feeds 2, the first match circuit 3, the first metal edge frame 9,6 and of zero inductance Reference ground 7 forms NFC antenna system;Diversity antenna feed 4, the second match circuit 5 and the first metal edge frame 9 form diversity antenna System;NFC antenna system and diversity aerial system share the first metal edge frame 9 as antenna radiator;WiFi feeds 13, third The second metal edge frame and reference ground 7 on match circuit 14, WiFi distributing points to the second metal edge frame 10 between reference ground 7 are formed WiFi antenna systems;GPS feeds 15, the 4th match circuit 16, on GPS distributing points to the 4th metal edge frame 12 between reference ground 7 The 4th metal edge frame and reference ground 7 formed GPS antenna system;Primary antenna feed 17, the 5th match circuit 18 and third metal Frame 11 forms primary antenna system.

In the present embodiment, the first match circuit 3 is used to match the resonant frequency of NFC antenna;Second match circuit 5 is used to open up The bandwidth of wide diversity antenna;Zero inductance 6 is used to improve the radiant power of NFC antenna, filters out high-frequency signal;Third match circuit 14 for the bandwidth of WiFi antennas of being widened, and the 4th match circuit 16 is used to being widened the bandwidth of GPS antenna, and the 5th match circuit 18 is used In the bandwidth of broadening primary antenna;Wherein, the circuit knot of third match circuit 14, the 4th match circuit 16 and the 5th match circuit 18 Structure can be identical with the second match circuit 5, sets the parameter of different capacitances and inductance, realizes the extension of different antennae bandwidth. In the present embodiment, the second metal edge frame 10 is the radiator of WiFi antennas, and third metal edge frame 11 is the radiator of primary antenna, the Four metal edge frames 12 are the radiator of GPS antenna.

Illustratively, in aforementioned four gap 8, two gaps can be located at the upper metal edge frame of mobile terminal, this two It is the first metal edge frame 9 between gap;Other two gap can be located at the lower metal edge frame of mobile terminal, other two gap Between be third metal edge frame 11.In addition, WiFi distributing points and GPS distributing points are located at upper metal edge frame.

Referring to Fig. 8, above-mentioned reference ground 7 may be disposed on Mobile terminal main board, and the dash area in Fig. 8 is reference ground.On State the predeterminated position of the second metal edge frame 10 and the 4th metal edge frame 12 for the second metal edge frame 10 and the 4th metal edge frame 12 with The section that dash area is in contact.

Further, the Mobile terminal main board on the inside of upper and lower metal edge frame is equipped with empty regions 19, for making the first gold medal Belong to frame 9 and the third metal edge frame 11 far from reference ground 7, to improve communication quality.Wherein empty regions, which refer to, does not arrange The region of reference ground.

It is identical in the equivalent circuit and embodiment one when NFC antenna and diversity antenna work in the present embodiment, herein no longer It repeats.Referring to Fig. 7, during WiFi Antenna Operations, the right dotted arrow represents its equivalent current path, WiFi feeds 13, third It is formed with the second metal edge frame between reference ground 7 on circuit 14, WiFi distributing points to the second metal edge frame 10 and reference ground 7 Loop antennas;When GPS antenna works, left side dotted arrow represents its equivalent current path, GPS feeds 15, the 4th match circuit 16th, the 4th metal edge frame on GPS distributing points to the 4th metal edge frame 12 between reference ground 7 and reference ground 7 form Loop Antenna;When primary antenna works, lower broken line arrow represents its equivalent current path, primary antenna feed 17, the 5th match circuit 18 Unipole antenna is formed with third metal edge frame 11.In addition, the layout of above-mentioned WiFi antennas and GPS antenna can be exchanged mutually.

In the present invention, NFC antenna can also share one section of metal edge frame with primary antenna, and diversity antenna uses other metal edges Frame.

The mobile terminal antenna system that the embodiment of the present invention two is provided utilizes the metal edge frame point of mobile terminal difference section Not Zu Cheng WiFi antenna structures, GPS antenna structure and main antenna structure, further solve in the prior art antenna with patch Mode is built in mobile terminal the problem of causing to occupy more space, saves the space of mobile terminal, more conducively mobile whole Volume microminiaturization design is held, further reduced antenna cost.

Embodiment three

The mobile terminal that the embodiment of the present invention three provides, including mobile terminal antenna system provided in an embodiment of the present invention. The mobile terminal opens up at least two gaps using its metal edge frame as antenna radiator on metal edge frame, by metal edge frame point Into at least two sections, wherein being integrated with NFC antenna structure and diversity antenna structure on one section of metal edge frame, mobile terminal is saved Space reduces antenna cost.

Wherein, mobile terminal can be smart mobile phone, tablet computer or personal digital assistant etc..

The mobile terminal that the embodiment of the present invention three is provided, the mobile terminal antenna system provided including the embodiment of the present invention System, has corresponding function and advantageous effect.

Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that The present invention is not limited to specific embodiment described here, can carry out for a person skilled in the art various apparent variations, It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.

Claims (7)

1. a kind of mobile terminal antenna system, which is characterized in that the metal edge frame including mobile terminal, near-field communication NFC feeds, First match circuit, diversity antenna feed, the second match circuit, zero inductance and reference ground;Be provided on the metal edge frame to Few two gaps, the metal edge frame between any of which adjacent slits is as the first metal edge frame;
The NFC feeds are connect by first match circuit with first metal edge frame;The diversity antenna feed leads to Second match circuit is crossed to connect with first metal edge frame;One end of the zero inductance and first metal edge frame Connection, another termination reference ground;The NFC feeds, the first match circuit, the first metal edge frame, zero inductance and with reference to landform Into NFC antenna system;The diversity antenna feed, the second match circuit and the first metal edge frame form diversity aerial system;Institute It states NFC antenna system and the diversity aerial system shares first metal edge frame as antenna radiator;
First match circuit is used to match the resonant frequency of NFC antenna;Second match circuit is for the diversity day that is widened The bandwidth of line;The zero inductance is used to improve the radiant power of NFC antenna, filters out high-frequency signal;The zero inductance is in NFC Short-circuit condition is equivalent to during Antenna Operation, open-circuit condition is equivalent to when diversity antenna works;
It is driveed on the metal edge frame there are four gap, metal edge frame sequence is divided into the first metal edge frame, the second metal edges Frame, third metal edge frame and the 4th metal edge frame;
Wireless Fidelity WiFi feeds are connect by third match circuit with one end of second metal edge frame;Global positioning system GPS feeds are connect by the 4th match circuit with one end of the 4th metal edge frame;Primary antenna feed passes through the 5th matching electricity Road is connect with the third metal edge frame;The predeterminated position of second metal edge frame and the 4th metal edge frame connects reference Ground;Each match circuit forms distributing point with the tie point of corresponding metal edge frame;The WiFi feeds, third match circuit, WiFi The second metal edge frame and reference ground on distributing point to the second metal edge frame between reference ground form WiFi antenna systems;It is described GPS feeds, the 4th match circuit, the 4th metal edge frame on GPS distributing points to the 4th metal edge frame between reference ground and reference Ground forms GPS antenna system;The primary antenna feed, the 5th match circuit and third metal edge frame form primary antenna system;
The third match circuit is for the bandwidth for the WiFi antennas that are widened, and the 4th match circuit is for the GPS antenna that is widened Bandwidth, the 5th match circuit are used for the bandwidth of primary antenna of being widened;
In four gaps, two gaps are located at the upper metal edge frame of mobile terminal, are described between described two gaps One metal edge frame;Other two gap is located at the lower metal edge frame of mobile terminal, is described between other two described gap Three metal edge frames.
2. mobile terminal antenna system according to claim 1, which is characterized in that first match circuit includes first Capacitance and the first inductance;One end of first capacitance and one end of the first inductance connect after being connected with first metal edge frame It connects, the other end of first capacitance is connect with the NFC feeds, another termination reference ground of first inductance.
3. mobile terminal antenna system according to claim 1, which is characterized in that second match circuit includes second Capacitance and the second inductance;One end of second capacitance and one end of the second inductance connect after being connected with first metal edge frame It connects, the other end of second inductance is connect with the diversity antenna feed, another termination reference ground of second capacitance.
4. mobile terminal antenna system according to claim 1, which is characterized in that the WiFi distributing points and the GPS Distributing point is located at upper metal edge frame.
5. mobile terminal antenna system according to claim 4, which is characterized in that the reference ground is set to mobile terminal On mainboard.
6. mobile terminal antenna system according to claim 5, which is characterized in that the movement on the inside of upper and lower metal edge frame Terminal mainboard is equipped with empty regions, for making first metal edge frame and the third metal edge frame far from the reference Ground.
7. a kind of mobile terminal, which is characterized in that the mobile terminal includes any mobile terminal days of claim 1-6 Linear system is united.
CN201510991162.0A 2015-12-23 2015-12-23 A kind of mobile terminal antenna system and mobile terminal CN105514624B (en)

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CN105514624B true CN105514624B (en) 2018-06-22

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